Compressive fatigue behaviors of ultra-high performance concrete containing coarse aggregate

Li, Lijian; Xu, Lihua; Huang, Le; Xu, Fanding; Huang, Yulei; Cui, Kai; Zeng, Yanqin; Chi, Yin

doi:10.1016/j.cemconcomp.2022.104425

Cited by 47 publications

(3 citation statements)

References 46 publications

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“…By adding fiber materials such as steel fibers, carbon nanotubes 4 – 6 , basalt fibers, etc., the mechanical properties and durability of concrete can be significantly improved. In the past decade, domestic and foreign scholars have conducted systematic experimental research on the fatigue performance of fiber reinforced concrete, and have achieved relatively rich research results 7 , 8 . Among them, basalt fiber reinforced concrete is increasingly being used due to its excellent mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on direct tensile fatigue performance of basalt fiber reinforced concrete

Zhang,

Lou,

Lyu

2024

Sci Rep

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Conducting research on the fatigue performance of concrete materials is of great significance for the anti fatigue design of concrete structures. Currently, indirect tensile or compressive strength tests are commonly used to study the fatigue performance of basalt fiber reinforced concrete, but there is little research on its fatigue performance under direct tensile conditions. Using a fatigue testing machine and a self-developed concrete axial tensile device, direct tensile fatigue tests of basalt fiber reinforced concrete were conducted under different fiber content and stress levels. Based on fatigue test data, the entire fatigue tensile process of basalt fiber reinforced concrete was analyzed, and the effects of fiber content and stress level on the fatigue life of concrete specimens were explored. Strain fatigue life curves of concrete with different fiber content were plotted. The experimental results indicate that the failure mode of basalt fiber reinforced concrete under cyclic loading is brittle failure; with the increase of basalt fiber content, the fatigue life of concrete first increases and then decreases. When the fiber content is 0.3%, the fatigue life of basalt fiber concrete is the highest compared to the benchmark concrete. When the fiber content is the same, the fatigue life of concrete decreases with the increase of stress level. The fatigue deformation process of basalt fiber reinforced concrete can be divided into three stages: the stage of fast strain growth, the stage of uniform strain growth, and the stage of rapid strain growth.

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Section: Introductionmentioning

confidence: 99%

Experimental study on direct tensile fatigue performance of basalt fiber reinforced concrete

Zhang,

Lou,

Lyu

2024

Sci Rep

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“…In the 1990s, French scholars proposed a new cement-based composite material with ultrahigh strength, ultra-high toughness and ultra-high durability, namely "ultra-high performance concrete" with water, cement, silica fume, ultra-fine fly ash, ultra-fine slag powder, quartz powder, fine aggregate, steel fiber and high-efficiency water-reducing agent as the main raw materials [1]. However, due to the high production cost, large shrinkage deformation and complex mixing process [2], this has largely limited its implementation and use in practical projects.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Flexural Capacity of High Strength Reinforced UHPC-CA Beams based on Orthogonal Test

Ma¹,

Tang²,

Bao³

et al. 2023

SJT

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The effects of the cross-sectional area of the reinforcement, the cross-sectional size of the specimen and the strength of ultra high performance concrete with coarse aggregate (UHPC-CA) on the flexural capacity of UHPC-CA beams with HRB500 grade high-strength reinforcement are analyzed by orthogonal test. The results show that the influence of various factors on the flexural capacity of high-strength reinforced UHPC-CA beams is in the order of specimen section size > reinforcement section area > UHPC-CA strength. With the increase of the three factors, the bending bearing capacity is improved in different degrees. The section size of the specimen is a general significant factor of the bending capacity, while the section area of the reinforcement and the UHPC-CA strength are not significant factors.

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“…These material properties make UHPFRC ideal for application in structures such as bridges where long-service lives and low maintenance requirements are desirable. [30][31][32][33] Although ideal for application in bridge structures, relatively little work has been focused on quantifying fatigue material properties for concrete in compression [34][35][36] or tension, 37,38 or to understand the impact of high-cycle fatigue on bond properties. 39 Because associated fatigue material properties have not been widely reported, there are significant challenges in using these results to validate analysis and design approaches.…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical analysis of cracking and tension stiffening in UHPFRC under high‐cycle fatigue

Sepulveda

Visintin

Sturm

et al. 2023

Structural Concrete

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Tension‐stiffening controls the serviceability behavior of concrete structures as it is responsible for crack formation and, consequently, the deflection of beams. In fiber reinforced concrete, such as ultra‐high performance fiber reinforced concrete (UHPFRC), fibers bridge cracks and thereby transfer tensile stresses across the cracked region, allowing for tensile stresses to be carried by the concrete within the cracked region. Due to structures being designed for longer design lives, the consideration of long‐term effects such as fatigue is required. Much research has examined tension‐stiffening under fatigue when subjected to low cyclic loading, but very little has considered the effects of high‐cycle fatigue, especially for UHPFRC. This paper presents the results of nine UHPFRC tension‐stiffening tests under high‐cycle fatigue in which the crack formation and development under varying cyclic ranges were studied. Specimens were subjected to as many as 5.7 million cycles, and crack readings were taken during each test. The experimental results demonstrate the random nature of cracking on UHPFRC as well as the increase in the crack width under cyclic loads. Finally, this research described the extension of an existing partial‐interaction mechanics model to allow for the stress in the fibers and the increase in crack width due to high cycle fatigue.

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Compressive fatigue behaviors of ultra-high performance concrete containing coarse aggregate

Cited by 47 publications

References 46 publications

Experimental study on direct tensile fatigue performance of basalt fiber reinforced concrete

Experimental study on direct tensile fatigue performance of basalt fiber reinforced concrete

Analysis of Flexural Capacity of High Strength Reinforced UHPC-CA Beams based on Orthogonal Test

Experimental and theoretical analysis of cracking and tension stiffening in UHPFRC under high‐cycle fatigue

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